> Noise, by nature, is digital so it is all square-shaped, like a pixel, and it’s uniform in nature because pixels are just a grid of little, tiny squares. So when you look very closely you can easily tell that noise and grain are two very different things with grain achieving actual randomness of size and positioning while noise is just a table of black, white, and grey squares.
edit: And calling film grain "organic" is a bit of a stretch, it's silver halide crystals.